<?php

namespace Topxia\Service\Group\Dao\Impl;

use Topxia\Service\Common\BaseDao;
use Topxia\Service\Group\Dao\ThreadDao;

class ThreadDaoImpl extends BaseDao implements ThreadDao
{
    protected $table         = 'groups_thread';
    private $serializeFields = array(
        'tagIds' => 'json'
    );
    public function getThread($id)
    {
        $sql = "SELECT * from {$this->table} where id=? LIMIT 1";
        return $this->getConnection()->fetchAssoc($sql, array($id)) ?: null;
    }

    public function getThreadsByIds($ids)
    {
        if (empty($ids)) {
            return array();
        }

        $marks = str_repeat('?,', count($ids) - 1).'?';
        $sql   = "SELECT * FROM {$this->table} WHERE id IN ({$marks});";

        return $this->getConnection()->fetchAll($sql, $ids);
    }

    public function addThread($thread)
    {
        $thread   = $this->createSerializer()->serialize($thread, $this->serializeFields);
        $affected = $this->getConnection()->insert($this->table, $thread);

        if ($affected <= 0) {
            throw $this->createDaoException('Insert Thread error.');
        }

        return $this->getThread($this->getConnection()->lastInsertId());
    }

    public function searchThreadsCount($conditions)
    {
        $builder = $this->_createThreadSearchBuilder($conditions)
                        ->select('count(id)');
        return $builder->execute()->fetchColumn(0);
    }

    public function waveThread($id, $field, $diff)
    {
        $fields = array('postNum', 'hitNum');

        if (!in_array($field, $fields)) {
            throw \InvalidArgumentException(sprintf("%s字段不允许增减，只有%s才被允许增减", $field, implode(',', $fields)));
        }

        $currentTime = time();
        $sql         = "UPDATE {$this->table} SET {$field} = {$field} + ?, updatedTime = {$currentTime} WHERE id = ? LIMIT 1";
        return $this->getConnection()->executeQuery($sql, array($diff, $id));
    }

    public function updateThread($id, $fields)
    {
        $fields['updatedTime'] = time();
        $this->getConnection()->update($this->table, $fields, array('id' => $id));

        return $this->getThread($id);
    }

    public function deleteThread($id)
    {
        $this->getConnection()->delete($this->table, array('id' => $id));
    }

    public function searchThreads($conditions, $orderBys, $start, $limit)
    {
        $this->filterStartLimit($start, $limit);
        $builder = $this->_createThreadSearchBuilder($conditions)
                        ->select('*')
                        ->setFirstResult($start)
                        ->setMaxResults($limit);

        foreach ($orderBys as $orderBy) {
            $builder->addOrderBy($orderBy[0], $orderBy[1]);
        }

        return $builder->execute()->fetchAll() ?: array();
    }

    protected function _createThreadSearchBuilder($conditions)
    {
        if (isset($conditions['title'])) {
            $conditions['title'] = "%{$conditions['title']}%";
        }

        $builder = $this->createDynamicQueryBuilder($conditions)
                        ->from($this->table, $this->table)
                        ->andWhere('groupId = :groupId')
                        ->andWhere('createdTime > :createdTime')
                        ->andWhere('isElite = :isElite')
                        ->andWhere('isStick = :isStick')
                        ->andWhere('type = :type')
                        ->andWhere('userId = :userId')
                        ->andWhere('status = :status')
                        ->andWhere('title like :title');
        return $builder;
    }
}
